Protective cage



FIG. 1 is a front perspective view of a protective cage showing our new design;

FIG. 2 is an enlarged front elevational view thereof;

FIG. 3 is a right side view thereof, the left side being a mirror image thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken line showing of a radio and connectors for attaching the radio to the protective cage is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a protective cage, as shown and described. 